Hello,
I assume you have Windows Hello set up. Could you try temporarily disabling it and logging in using your full password instead?
Additionally, make sure your network connection is stable and that the host permissions are correctly configured.
Alternatively, try using MSTSC, tick the web account as user authentication under the Advanced TAB.
Under the Local Resources tab, select "Smart cards" and "Web Authn," and then give it another try.
Best regards,
Karlie